Patents by Inventor Willis D. Miller

Willis D. Miller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ratcheting winding cone
    Patent number: 6735905
    Abstract: A ratcheting system is used to wind a helical torsion spring around a torsion bar in a counterbalancing mechanism for an overhead door having multiple panel sections. The ratcheting system contains: (1) a cylindrical sleeve encompassing the torsion bar, the sleeve having longitudinal channels and being secured to the torsion bar at the winding end of the torsion spring; (2) a winding cone adapted to fit over the cylindrical sleeve and having a cone-shaped section connected to the winding end of the torsion spring, a plurality of radial openings for receiving winding bars, a first threaded radial opening containing a set screw, and a second threaded radial opening containing a pull pin, the pull pin having a spring-biased beveled projection that extends inwardly from the winding cone to contact the longitudinal channels of the cylindrical sleeve.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: May 18, 2004
    Assignee: CHI Overhead Doors, Inc.
    Inventor: Willis D. Miller
  • Overhead door
    Patent number: D500857
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: January 11, 2005
    Assignee: C.H.I. Overhead Doors, Inc.
    Inventors: Willis D. Miller, James L. Overholt
  • Overhead door
    Patent number: D501563
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: February 1, 2005
    Assignee: C.H.I. Overhead Doors, Inc.
    Inventors: Willis D. Miller, James L. Overholt
  • Overhead door section
    Patent number: D571483
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: June 17, 2008
    Inventor: Willis D. Miller
  • Overhead door
    Patent number: D499815
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: December 14, 2004
    Assignee: C.H.I. Overhead Doors
    Inventors: Willis D. Miller, James L. Overholt